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Title: Measurement of the top quark mass with the dynamical likelihood method using lepton plus jets events with b-tags in p anti-p collisions at s**(1/2) = 1.96-TeV

Abstract

This report describes a measurement of the top quark mass, M{sub top}, with the dynamical likelihood method (DLM) using the CDF II detector at the Fermilab Tevatron. The Tevatron produces top/anti-top (t{bar t}) pairs in p{bar p} collisions at a center-of-mass energy of 1.96 TeV. The data sample used in this analysis was accumulated from March 2002 through August 2004, which corresponds to an integrated luminosity of 318 pb{sup -1}. They use the t{bar t} candidates in the ''lepton+jets'' decay channel, requiring at least one jet identified as a b quark by finding an displaced secondary vertex. The DLM defines a likelihood for each event based on the differential cross section as a function of M{sub top} per unit phase space volume of the final partons, multiplied by the transfer functions from jet to parton energies. The method takes into account all possible jet combinations in an event, and the likelihood is multiplied event by event to derive the top quark mass by the maximum likelihood method. Using 63 t{bar t} candidates observed in the data, with 9.2 events expected from background, they measure the top quark mass to be 173.2{sub -2.4}{sup +2.6}(stat.) {+-} 3.2(syst.) GeV/c{sup 2}, or 173.2{sub -4.0}{supmore » +4.1} GeV/c{sup 2}.« less

Authors:
; ; ; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
897293
Report Number(s):
FERMILAB-PUB-05-533-E
Journal ID: ISSN 0556-2821; PRVDAQ; arXiv eprint number hep-ex/0512009; TRN: US0701561
DOE Contract Number:  
AC02-07CH11359
Resource Type:
Journal Article
Journal Name:
Phys.Rev.D73:092002,2006
Additional Journal Information:
Journal Volume: 73; Journal ID: ISSN 0556-2821
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; B QUARKS; DECAY; DIFFERENTIAL CROSS SECTIONS; FERMILAB COLLIDER DETECTOR; FERMILAB TEVATRON; LEPTONS; LUMINOSITY; PHASE SPACE; T QUARKS; TRANSFER FUNCTIONS; Experiment-HEP

Citation Formats

Abulencia, A, Acosta, D, Adelman, Jahred A, Affolder, Anthony A, Akimoto, T, Albrow, M G, Ambrose, D, Amerio, S, Amidei, D, Anastassov, A, Anikeev, K, and /Taiwan,Inst. Phys. /Argonne /Barcelona, IFAE /Baylor U. /INFN, Bologna /Bologna U. /Brandeis U. /UC, Davis /UCLA /UC, San Diego /UC, Santa Barbara. Measurement of the top quark mass with the dynamical likelihood method using lepton plus jets events with b-tags in p anti-p collisions at s**(1/2) = 1.96-TeV. United States: N. p., 2005. Web. doi:10.1103/PhysRevD.73.092002.
Abulencia, A, Acosta, D, Adelman, Jahred A, Affolder, Anthony A, Akimoto, T, Albrow, M G, Ambrose, D, Amerio, S, Amidei, D, Anastassov, A, Anikeev, K, & /Taiwan,Inst. Phys. /Argonne /Barcelona, IFAE /Baylor U. /INFN, Bologna /Bologna U. /Brandeis U. /UC, Davis /UCLA /UC, San Diego /UC, Santa Barbara. Measurement of the top quark mass with the dynamical likelihood method using lepton plus jets events with b-tags in p anti-p collisions at s**(1/2) = 1.96-TeV. United States. doi:10.1103/PhysRevD.73.092002.
Abulencia, A, Acosta, D, Adelman, Jahred A, Affolder, Anthony A, Akimoto, T, Albrow, M G, Ambrose, D, Amerio, S, Amidei, D, Anastassov, A, Anikeev, K, and /Taiwan,Inst. Phys. /Argonne /Barcelona, IFAE /Baylor U. /INFN, Bologna /Bologna U. /Brandeis U. /UC, Davis /UCLA /UC, San Diego /UC, Santa Barbara. Thu . "Measurement of the top quark mass with the dynamical likelihood method using lepton plus jets events with b-tags in p anti-p collisions at s**(1/2) = 1.96-TeV". United States. doi:10.1103/PhysRevD.73.092002. https://www.osti.gov/servlets/purl/897293.
@article{osti_897293,
title = {Measurement of the top quark mass with the dynamical likelihood method using lepton plus jets events with b-tags in p anti-p collisions at s**(1/2) = 1.96-TeV},
author = {Abulencia, A and Acosta, D and Adelman, Jahred A and Affolder, Anthony A and Akimoto, T and Albrow, M G and Ambrose, D and Amerio, S and Amidei, D and Anastassov, A and Anikeev, K and /Taiwan,Inst. Phys. /Argonne /Barcelona, IFAE /Baylor U. /INFN, Bologna /Bologna U. /Brandeis U. /UC, Davis /UCLA /UC, San Diego /UC, Santa Barbara},
abstractNote = {This report describes a measurement of the top quark mass, M{sub top}, with the dynamical likelihood method (DLM) using the CDF II detector at the Fermilab Tevatron. The Tevatron produces top/anti-top (t{bar t}) pairs in p{bar p} collisions at a center-of-mass energy of 1.96 TeV. The data sample used in this analysis was accumulated from March 2002 through August 2004, which corresponds to an integrated luminosity of 318 pb{sup -1}. They use the t{bar t} candidates in the ''lepton+jets'' decay channel, requiring at least one jet identified as a b quark by finding an displaced secondary vertex. The DLM defines a likelihood for each event based on the differential cross section as a function of M{sub top} per unit phase space volume of the final partons, multiplied by the transfer functions from jet to parton energies. The method takes into account all possible jet combinations in an event, and the likelihood is multiplied event by event to derive the top quark mass by the maximum likelihood method. Using 63 t{bar t} candidates observed in the data, with 9.2 events expected from background, they measure the top quark mass to be 173.2{sub -2.4}{sup +2.6}(stat.) {+-} 3.2(syst.) GeV/c{sup 2}, or 173.2{sub -4.0}{sup +4.1} GeV/c{sup 2}.},
doi = {10.1103/PhysRevD.73.092002},
journal = {Phys.Rev.D73:092002,2006},
issn = {0556-2821},
number = ,
volume = 73,
place = {United States},
year = {2005},
month = {12}
}